Cell Bio- Kreb's Cycle

Where does the transition step and Krebs cycle occur?

Mitochondrial matrix

Pyruvate must be transported across the double mitochondrial membrane from cytosol into the matric

CoA is a carrier molecule for the acetyl group

What is the overall reaction per glucose?

2 pyruvate —> 2 acetyl-CoA+ 2 NADH + 2 CO2

How many steps does the Krebs cycle have?

8 steps, each catalyzed by a different enzyme

How many times does the Krebs cycle turn per glucose molecule?

Twice

What is FAD?

An electron carrier found in the Krebs cycle. It is the oxidized form and a coenzyme

What are the outputs of the Krebs cycle, and how many of each are made per glucose?

Per cycle: 1 ATP, 1 FADH2, 3 NADH, 2 CO2

Per glucose: 2 ATP, 2 FADH2, 6NADH, 4 CO2